1243 
=, KK X 
=< 
SS 
Cee 
zt 
se ee 
SN 
oe 
KEN \ — 
sG 
\ AEN ar Hit EN NN 
DISTRICT ZA EEE Be 
NY ie ns — N 
x = ams 
QW WL 
x! 
NIN MIN 
WS 
Archaeicum. 
=| Foyaite, Umptekite, Atlantic Ocean. 
Pulaskite, etc. 
renner Granite. 
Scale 1: 500.000 
Fig. 1. Geological Sketchmap of the environs of the Serra do Gericinó to the 
Northwest of Rio de Janeiro. R. C. = Rio Cachoeira, (compiled from observations 
of Dr. MATHIAS DE OLIVEIRA Roxo). k 
80* 
